Valaciclovir EP Impurity N CAS 2519847-26-6
| CAS No. | 2519847-26-6 |
| Molecular Formula | C19H25N11O5 |
| Molecular Weight | 487.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
As a process- or degradation-related impurity, Valaciclovir EP Impurity N (CAS 2519847-26-6, C19H25N11O5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Valaciclovir EP Impurity N is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 487.47 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C19H25N11O5 |
| Molecular Weight | 487.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2000 |
| Nitrogen Atoms | 11 |
Related Valaciclovir Standards
- Valaciclovir EP Impurity Q (CAS CATO-C4X-124817)
- Valaciclovir Impurity 40 (CAS CATO-C4X-124840)
- Valaciclovir EP Impurity E Enantiomer (Valacyclovir USP Related Compound E Enantiomer) (CAS 124832-32-2)
- Valaciclovir Impurity 29 (CAS CATO-C4X-124829)
- Valaciclovir EP Impurity E (CAS 124832-31-1)
- Valaciclovir Impurity 44 (CAS CATO-C4X-124844)
- Valaciclovir Impurity 56 (CAS CATO-C4X-124856)
- Valaciclovir EP Impurity O (CAS CATO-C4X-124819)
Recommended Standards
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- CAS 1628530-47-1 (CAS 1628530-47-1)
- AZD-8529, 98% (HPLC) (CAS 1092453-15-0)
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- 2,2-Difluoro-2-[2-(trifluoromethyl)phenyl]acetic acid (CAS 1343107-31-2)
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- (4-Bromobenzyl)(3-fluorophenyl)sulfane (CAS 1443303-50-1)
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